摘要
分别采用过渡金属(Fe,Zn,Cr,Cu)、盐酸、氢氧化钠以及十二烷基硫酸钠(SDS)对4A分子筛改性,并测其吸附污水中氨氮性能。结果表明,Fe和SDS协同改性的4A分子筛去除氨氮性能最佳,在25℃时,单分子层饱和吸附量为3.20 mg/g,其吸附动力学符合准二级反应动力学方程。
4A Molecular sieves were modified with transition metal,such as Fe,Cu,Zn,Cr,HCl,Na OH and sodium dodecylsulfate,and the performances of ammonia adsorption were measured. The results show that Fe and SDS collaborative remove ammonia nitrogen performance is best,modified 4A molecular sieves and the theoretical maximum adsorption capacity is 3. 20 mg/g,at 25 ℃. The dynamic adsorption data were well described by pseudo-second-order reaction rate model.
出处
《应用化工》
CAS
CSCD
北大核心
2015年第2期250-253,257,共5页
Applied Chemical Industry
基金
山东省自然科学基金项目(ZR2014BL014)
山东省高等学校科技计划项目(J14LC54)
滨州市科学技术发展计划项目(2014ZC0212)
滨州学院基金项目(2010Y06
BZXYFB20100403
BZXYQNLG200912)
关键词
过渡金属离子
表面活性剂
改性4A分子筛
氨氮
transition metal ions
surfactant
modified 4A molecular sieve
ammonia nitrogen